Question

calucule a) (2-5i)-(1+9i

Answer 1

(2-5i)-(1+9i) = 2-5i-1-9i = 2-1-5i-9i = 1-14i

Answer 2

( 2 - 5 i ) - ( 1 + 9 i)
2 - 5 i  - 1 - 9 i
2 - 1 - 5 i - 9 i
(1 - 14 i)


espero ter ajudado